Answer:
40 pounds can not support a 21-kilogram .
Explanation:
Given : 2.2 lb = 1 kg.
To find: will a stand that can hold up to 40 pounds support a 21-kilogram .
Solution : We have given
2.2 lb = 1 kg.
40 lb = 18.1 kg
It mean 40 pound can hold up to 18.1 kg bu not more than 18.1 kg
So , 40 pounds can not support a 21-kilogram .
Therefore, 40 pounds can not support a 21-kilogram .